So I'm flipping through the frames and I come to one where I was trying to explain how the slope of a vertical line is undefined, which I completely had forgotten about...

(Now with 100% less titlefail!)

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A collection of lessons that I like from my class, or that I've found through the magic of the internets.

## Thursday, October 22, 2009

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I cracked myself up today

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I was looking through my lesson on slope from last year, and there were a bunch of frames with this skateboarding guy to help show how to think about slope.

I laughed pretty hard. Chalk up a positive for having a terrible memory.

(Now with 100% less titlefail!)

So I'm flipping through the frames and I come to one where I was trying to explain how the slope of a vertical line is undefined, which I completely had forgotten about...

(Now with 100% less titlefail!)

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- Mr. Sweeney
- Philadelphia, PA
- I'm a high school math teacher who teaches at a private school in the suburbs of Philadelphia. This year I'll be teaching Algebra 1, Algebra 2 and Calculus.

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The poor guy's been hanging on there for a year now. How about throwing him a (horizontal) line?!

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